Yugoslavia stamps year 1950 Chess Olympiad in Dubrovnik MNH

• Issue: commemorative set for the 9th Chess Olympiad, Dubrovnik (Yugoslavia), issued 20 August 1950.
• Format: 5-stamp set (denominations typically 2, 3, 5, 10, 20 dinars), showing chess motifs (pieces, board, globe, map/flags).
• Catalogue references: commonly Michel Mi.616–620 and Scott Sc.300–304 (other catalogues like Yvert/Domfil also list them).

Who made them / design notes

• Designer: Janez Trpin (Slovenian graphic artist).
• Printed by: Courvoisier S.A. (Swiss printer — typical for many mid-century Yugoslav commemoratives).

Condition & collecting notes

• Typical varieties to watch for: mint hinged (H), mint never hinged (MNH / postfrisch), used, First Day Covers (FDCs), blocks/strips or positional varieties — FDCs and MNH blocks/sets usually command a premium.
• For stamps sold online, sellers often show closeups of gum/perforations to verify MNH; exhibition / museum pieces (Dubrovnik items) are also common.